40400346 has 32 divisors (see below), whose sum is σ = 97205760. Its totient is φ = 10935216.

The previous prime is 40400323. The next prime is 40400357. The reversal of 40400346 is 64300404.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24516 + ... + 26111.

It is an arithmetic number, because the mean of its divisors is an integer number (3037680).

Almost surely, 2^40400346 is an apocalyptic number.

40400346 is an abundant number, since it is smaller than the sum of its proper divisors (56805414).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40400346 is a wasteful number, since it uses less digits than its factorization.

40400346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50658.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 40400346 is about 6356.1266507205. The cubic root of 40400346 is about 343.1323738881.

The spelling of 40400346 in words is "forty million, four hundred thousand, three hundred forty-six".